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Definitions

bacteria

[bak-teer-ee-uh] / bækˈtɪər i ə /
NOUN
microorganisms
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The most severe form of Legionella bacteria infection leads to Legionnaires’ disease, a serious and potentially deadly type of pneumonia, the CDC says.

From Los Angeles Times • May 18, 2026

Root canal treatment works by removing infected tissue inside the tooth and sealing the area to prevent bacteria and toxins from spreading into surrounding tissues.

From Science Daily • May 16, 2026

When bacteria spread into the tissues surrounding the tooth root, the immune system reacts.

From Science Daily • May 16, 2026

Small amounts of salt in food can help preserve it by preventing bacteria from growing.

From BBC • May 15, 2026

For cystic fibrosis patients, cross-infection from certain bacteria strains is a huge risk.

From "Five Feet Apart" by Rachael Lippincott




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